1220815614 has 16 divisors (see below), whose sum is σ = 2463239952. Its totient is φ = 403337088.

The previous prime is 1220815601. The next prime is 1220815627. The reversal of 1220815614 is 4165180221.

It is an interprime number because it is at equal distance from previous prime (1220815601) and next prime (1220815627).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 899629 + ... + 900984.

It is an arithmetic number, because the mean of its divisors is an integer number (153952497).

Almost surely, 2^1220815614 is an apocalyptic number.

1220815614 is an abundant number, since it is smaller than the sum of its proper divisors (1242424338).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1220815614 is a wasteful number, since it uses less digits than its factorization.

1220815614 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1800731.

The product of its (nonzero) digits is 3840, while the sum is 30.

The square root of 1220815614 is about 34940.1719228741. The cubic root of 1220815614 is about 1068.7677939926.

Adding to 1220815614 its reverse (4165180221), we get a palindrome (5385995835).

The spelling of 1220815614 in words is "one billion, two hundred twenty million, eight hundred fifteen thousand, six hundred fourteen".